I don't see how that explains the encoding:reconstruction perf relationship. Looking at the first pair (12+4 encoding), epyc is about twice as fast as avx2-inte

I don't see how that explains the encoding:reconstruction perf relationship. Looking at the first pair (12+4 encoding), epyc is about twice as fast as avx2-intel and four times as fast as graviton at encoding. But in reconstruction its two to three times slower than either.